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Old 03-16-2007, 04:15 PM   #5
boost junkie
brent-E30's Avatar
Join Date: May 2006
Location: dundas, ontario
Posts: 297
it depends how well the m20 was taken care of, there i guy on this forum i forget his user name, but on a well taken care of m20 with hi km's he was runing around 10-15 psi and his new setup will do 20-25 psi on the same motor all thats done is head studs. but on the other hand a rebuild would be a good idea and then you wouldent have to wory about boosting it.
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